Update resources per 2016-10-06 changes

[markpeek]

AWS::ApiGateway::Authorizer
Use the ProviderARNs property to use Amazon Cognito user pools as Amazon API Gateway API authorizers.

AWS::ApiGateway::Deployment
The StageName property is no longer required.

AWS::ApiGateway::RestApi
Use the Mode property to specify the update behavior of your Amazon API Gateway APIs.

AWS::ElasticLoadBalancingV2::TargetGroup
For the GetAtt function, use the LoadBalancerArns attribute to retrieve the Amazon Resource Names (ARNs) of the load balancers that route traffic to the target group.

AWS::RDS::DBInstance
Use the Domain and DomainIAMRoleName properties to use Windows Authentication when users connect to the RDS DB instance.

AWS::EC2::SecurityGroupEgress
Use the DestinationPrefixListId property to specify the AWS service prefix of an Amazon VPC endpoint.